Pulp-screening machine.



PULBSGR'EBNING MACHINE.

APPLICATION FILED AUG.*14, 1905.

lPATENTED MAR; 20, 1906,

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n@ NNI @Mom/MW- No. 815,421.. l PATBNTBD MAR. 2o. 1906.

' r E. W. GooDRIcK. PULP SCREENING MACHINE. APILIOATION FAILED AUGM. 1905.-

3 SHEETS-SHEET 2.

,.No. 815,421. :PATBNTED MAR. 20,1906.

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PULP SCREENING lszlAclarIm.`

APPLICATION FILED AUG. 14. 1905.

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g UNITED AsTATEs APATENT o-EEIGE. 1

EDWARD W. GooDEIcK, or AIPLEroNWIscoNsIN, AssIsNoE or ONE- VNo. 815,421.

Specification of Letters Patent. applicati@ leaaugua 14 1.905. serial No. zvaoae.

HALE TO APPLETON MACHINE COMPANY, OE APPLETON, WISCONSIN.

PULP-SCREENING MACHINE.

Patented March 20, 1906.

, T all whom 1f/may concern:

Be it known that I, EDWARD W. Goon- RIcK, a citizen of the United States, and a resident of Appleton, in the county of Outa amie and State of Wisconsin, have invente certain new and useful Improvements in Pulp- Screening Machines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention consists in certain peculiarities of construction and combination of parts hereinafter particularly set forth with reference to the yaccom anyin drawings and subsequently claime its o ject being to provide simple, economical, durable, and efficient pulp-screening machines, as well as to do away with-packing between screen-frames and their supports in such machines.Y

Figure l of the drawings represents a side elevation of a pulp-screening machine inaccordance with ymy invention, partly in 'section; Fig. 2, a transverse section view ofthe machine; and Fig. 3 a plan view of said machine, having parts thereof broken away.

Referring by letter to the drawings, A indicates each of a plurality of standards connected to a box-girthB, and aframe C is bolty ed or otherwise rigidly secured on the standthat are each in connection with a coupling H ards. Surmounting the girth is an oil-box D provided with bearings for a driven shaft E, and fast on the shaft at` suitable intervals thereof are cams F, opposing friction-blocks G attached to one end o f a horizontal spring-baf I, the other end of which-is clamped in connection With the upper extremity of an `in clined arm J, made fast at its lower extremity toa side of the girth aforesaid. The bottom of the oil-box is provided with sockets, one of which is shown at t in Fig. 2, and

screw-threaded in each socket is the lower end of a rod K, that extends through a coupling H and springbar I therewith.` Arranged on the rod against the coupling is a spiral spring L, and the tension of spring is regulated by a nut c, run on the screwthreaded upper end of said rod against an interposed washer d, the construction and arrangement of parts thus far described and a pitman H', in connection with each coupling,

being common in the art t0 which my ini-- provements pertain'. Bolted or otherwise fastened to the upper end of each pitman is the depending'center shank c of a pan M, having parallel under ribs f bolted or otherwise rigidlypsecured to ,spring stay-bars N, that are fastened at their ends to innerribs of theframe C, these stay-bars, in connection with said frame and a vibratory device, being also common in the art; but the pan is an e'special feature of my im` rovementsx Each pan is shown as preferab y provided with an angular discharge-spout g at each end; butit maybe madewithbut one such spout at the preferred end thereof, each spout being ata suitable elevation above the pan-bottom. However, `each pan is necessarily provided with one. or more outlets in any suitable arrangement; The bottom of each pan is provided with an endless inner flange h, the function of 'which is hereinafter` specified, and

each pan-spout discharges into a flow-box O, attached to the frame C aforesaid. The

inner sides of each pan-spout rare provided -With vertical groovesi, in which to slide the ends of a weir, such a devicebeing shown by dotted lines in the spouts of a an in Fig, 3.

Supported on the frame CP is the screenframe P of the machine, and this screenframe isl held by screws or other suitable means in detachable rigid connection with the wallsof the pulp-vat Q, said walls of which have outer hook-brackets y', engaging links 7c, in connection with: eyebolts m, that extend through lugs n of the frame first aforesaid and engage clamp-nuts p, opposed to said lu s. The side walls of,the pulp-vat are provi ed with outer ball-brackets g, and these brackets engage socket-lugs r of the frame C, .whereby-said vat and screen-frame therewith are putin readily-removable hinge connection with opposite sides of the other frame, as is customary in the art. Partly-inclined and partly-vertical endless flanges s of the screenframe depend into the underlying pans below the spouts of same, preferably outsidevof the inner bottom flan es h of said pans. Bars t, extending thewho e depth of the screenframe, are notched to give clearance for the flanges h of the pans, and parallel to these bars the ends and division-platesu of said frame .are screen-supporting bars w lof less depth than the bars aforesaid. The screen-plates R are fastened to the ends, sides, divisionplates, and main bars of their supportingframe P by screws or other suitable means,

IOO

.cent to the bottom flange of same.

and the 4center solid portion of each plate rests on one of the auxiliary bars w of said frame.

In practice water is run through the screens ahead of pulp to accumulate in the pans to a depth that will form a seal between said pans and the depending flanges s of the screenframe, and vertical vibration is imparted to the aforesaid pans by the rotation of the shaft E of the machine. Pulp from the vat is sucked through the screens incidental to downward motion of the pans, and reaction is had on the pulp in said vat incidental to upward motion of said pans to keep said screens from clogging, baekflow of pulp from the space between the pan-walls and depending flanges of the screen-frame being retarded by the flanges 7L on the bottoms of the aforesaid pans. The depth of the material in the pans and spouts of same may be increased to a variable degree by the introduction of suitable weirs in said spouts, and the strained pulp from said pans escapes into the flow box or boxes of the machine.

The machine may be of one-pan design or comprise an indefinite number of pans, a plural-pan type of machine being herein illustrated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a pulp-screening machine, a vertically-vibratory pan provided with one or more outlets, and a screen-frame having an endless flange depending into the pan.

2. In a pulp-screening machine, a vertically-vibratory pan having an inner endless bottom flange and provided with one or more outlets, and a screen-frame having an endless flange depending into the pan adj a- 3. In a pulp-screening machine, a vertically-vibratory pan provided with one or more spouts at a suitable elevation above its bottom, and a screen-frame having an endless flange depending into the pan below the spout or spouts of same.

4. In a pulp-screening machine, a vertil cally-vibratory pan having an inner endless flange on its bottom, and provided with one or more spouts at a suitable elevation above said bottom, and a screen-frame having an endless flange depending into the pan below the spout or spouts of same adjacent to the b ottom flange of said pan.

5. In a pulp-screening machine, a vertieally-vibratory pan provided with one or more spouts ata suitable elevation above its bottom, each spout having inner side grooves for the engagement of a weir; and a screenframe having an endless flange depending into the pan below the spout or spouts of same.

6. In a pulp-screening m aehine, a plurality of vertically-vibratory pans each provided with one or more spouts at a suitable elevation above its bottom, and a screen-frame having a plurality of endless flanges each of which depends into a pan below the spout or spouts of same.

7. In a pulp-screening machine a plurality of vertically vibratory pans each provided with one or more spouts at a suitable elevation above its bottom and having an inner endless flange on said bottom, and a sereenframe having a plurality of endless flanges each of which depends into a pan below the spout or spouts of same adjacent to the bottom flange thereof.

8. In a pulpsereening machine, a plurality of vertically-vibratory pans each provided with one or more spouts at a suitable elevation above its bottom, each spout having inner side grooves for the engagement of a weir; and a screen-frame having a plurality of endless flanges each of which depends into a pan below the spout or spouts of same.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

EDIVARD W. GOODRICK.

Witnesses:

N. E. OLIPHANT, GEORGE TELLER. 

